 # Multiplication of Decimals

In this worksheet, students multiply decimal numbers. Key stage:  KS 3

Curriculum topic:   Number

Curriculum subtopic:   Use Four Operations for All Numbers

Difficulty level:   ### QUESTION 1 of 10

In this worksheet, we will be multiplying decimal numbers.

Examples

When multiplying decimal numbers, you adjust the decimal number by multiplying it by 10 or 100 to convert it into a whole number. Then you carry out the multiplication.  Finally you re-adjust  your answer by dividing by 10 or 100 to convert them back into decimals.

7.35 × 31

Multiply 7.35 by 100 to get 735.

Work out 735 x 31 = 22785

Divide this by 100 to get the answer 227.85

2.7 × 41.2

Multiply 2.7 by 10 to get 27 and 41.2 by 10 get 412

Work out 27 x 412 = 11124

Divide this by 10 x 10 = 100 to get the answer 111.24

Work out:

2.5 × 12 = _________

Work out:

2.44 × 20 = _________

Calculate:

9.76 × 45 = _________

Work out:

6.8 × 1.2 = _________

Calculate:

1.94 × 2.1 = _________

Work out:

9.08 × 908 = _________

Work out:

4.11 × 4.1 = _________

Calculate:

5.05 × 505 = _________

Work out:

3.04 × 304 = _________

Calculate:

3.04 × 3.04 = _________

• Question 1

Work out:

2.5 × 12 = _________

30
EDDIE SAYS

Multiply 2.5 by 10 to get 25

Multiply 12 by 10 to get

25 x 12 = 300

Divide 300 by 10 to get 30

• Question 2

Work out:

2.44 × 20 = _________

48.8
EDDIE SAYS

Multiply 2.5 by 10 to get 25

Multiply 12 by 10 to get

25 x 12 = 300

Divide 300 by 10 to get 30

• Question 3

Calculate:

9.76 × 45 = _________

439.2
EDDIE SAYS

Multiply 2.5 by 10 to get 25

Multiply 12 by 10 to get

25 x 12 = 300

Divide 300 by 10 to get 30

• Question 4

Work out:

6.8 × 1.2 = _________

8.16
EDDIE SAYS

Multiply 6.8 by 10 to get 68

Multiply 1.2 by 10 to get 12

68 x 12 = 816

Divide 816 by 100 to get 8.16

• Question 5

Calculate:

1.94 × 2.1 = _________

4.074
EDDIE SAYS

Multiply 1.94 by 100 to get 194

Multiply 2.1 by 10 to get 21

194 x 21 = 4074

Divide 300 by 1000 to get 4.074

• Question 6

Work out:

9.08 × 908 = _________

8244.64
EDDIE SAYS

Multiply 9.08 by 100 to get 908

908 x 908 = 824464

Divide 842464 by 100 to get 8244.64

• Question 7

Work out:

4.11 × 4.1 = _________

16.851
EDDIE SAYS

Multiply 4.11 by 100 to get 411

Multiply 4.1 by 10 to get 41

411 x 41 = 16851

Divide 16851 by 1000 to get 16.851

• Question 8

Calculate:

5.05 × 505 = _________

2550.25
EDDIE SAYS

Multiply 5.05 by 100 to get 505

505 x 505 = 255025

Divide 255025 by 100 to get 2550.25

• Question 9

Work out:

3.04 × 304 = _________

924.16
EDDIE SAYS

Multiply 3.04 by 100 to get 304

304 x 304 = 92416

Divide 92416 by 100 to get 924.16

• Question 10

Calculate:

3.04 × 3.04 = _________

9.2416
EDDIE SAYS

Multiply 3.04 by 100 to get 304

304 x 304 = 92416

Divide 92416 by 10000 to get 9.2416

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